#define _CRT_SECURE_NO_WARNINGS 1

int is_leap_year(int y)
{
	if (((y % 4 == 0) && (y % 100 != 0)) || (y % 400 == 0))
	{
		return 1;
	}
	else
		return 0;
}

int days_of_month(int y, int m)
{
	int days[] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
	int day = days[m];
	if (is_leap_year(y) ==1 && m == 2)
	{
		day++;
	}
	
	return day;
}